检索结果-南通市图书馆

Increasing age and duration of sex work among female sex workers in South Africa and implications for HIV incidence estimation:Bayesian evidence synthesis and simulation exercise

引用

Infectious Disease Modelling 2024年第1期9卷 263-277页

作者： Nanina Anderegg Mariette Slabbert Kholi Buthelezi leigh F.Johnson Centre for Infectious Disease Epidemiology and Research School of Public HealthUniversity of Cape TownSouth Africa Institute of Social and Preventive Medicine University of BernSwitzerland Independent Consultant PretoriaSouth Africa National Sex Workers Movement in South Africa

Introduction:In sub-Saharan Africa,accurate estimates of the HIV epidemic in female sex workers are crucial for effective prevention and care *** estimates are typically derived from mathematical models that assume certain demographic and behavioural characteristics like age and duration of sex work to remain constant over *** reviewed this assumption for female sex workers in South ***:We reviewed studies that reported estimates on either the age or the duration of sex work among female sex workers in South *** used Bayesian hierarchical models to synthesize reported estimates and to study time *** a simulation exercise,we also investigated the potential impact of the"constant age and sex work duration"-assumption on estimates of HIV ***:We included 24 different studies,conducted between 1996 and 2019,contributing 42 estimates on female sex worker age and 27 estimates on sex work *** was evidence suggesting an increase in both the duration of sex work and the age of female sex workers over *** to the fitted models,over each decade the expected duration of sex work increased by 55.6%(95%-credible interval[CrI]:23.5%–93.9%)and the expected age of female sex workers increased by 14.3%(95%-CrI:9.1%–19.1%).Over the 23-year period,the predicted mean duration of sex work increased from 2.7 years in 1996 to 7.4 years in 2019,while the predicted mean age increased from 26.4 years to 32.3 *** for these time trends in the simulation exercise resulted in a notable decline in estimated HIV incidence rate among sex workers over *** decline was significantly more pronounced than when assuming a constant age and duration of sex ***:In South Africa,age and duration of sex work in female sex workers increased over *** this trend might be influenced by factors like expanding community mobilization and improved rights advocacy,the ongoing criminalisation,stigmatisation of s

关键词： Female sex workers Mathematical modelling South Africa HIV

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

巧妙利用自然光悉尼中央车站成为最新建筑地标

引用

商业周刊（中文版） 2024年第14期 44-45页

作者： Karen leigh 孟洁冰(译) 不详

悉尼最著名的建筑地标高高矗立在海港之上:约恩·乌松(Jorn Utzon)设计的悉尼歌剧院两侧标志性的风帆、悉尼海港大桥宏伟的钢铁拱形结构。不过,最新的建筑地标却位于城市的街道下方。澳大利亚城市悉尼庞大的中央车站(对标组约的中央车... 详细信息

悉尼最著名的建筑地标高高矗立在海港之上:约恩·乌松(Jorn Utzon)设计的悉尼歌剧院两侧标志性的风帆、悉尼海港大桥宏伟的钢铁拱形结构。不过,最新的建筑地标却位于城市的街道下方。澳大利亚城市悉尼庞大的中央车站(对标组约的中央车站和伦敦的国王十字车站)的翻修工程于去年启动,这项工程由伍兹贝格(Woods Bagot)牵义,耗资约10亿衡元(约合6.78亿美元)。

关键词：悉尼歌剧院拱形结构地标翻修工程自然光悉尼海港大桥澳大利亚

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Longer Siesta?DN1s in Control!

引用

Neuroscience Bulletin 2017年第1期33卷 113-114页

作者： Wesley A.leigh Yong Zhang Department of Biology University of NevadaReno1664 NVirginia StRenoNV 89557USA

Sleep is an essential behavior that is conserved in most animal species. Two molecular mechanisms regulate sleep： circadian clocks for the timing of sleep, and a homeostatic process for the amount of sleep [1]. The fruit fly, Drosophila melanogaster, exhibits robust sleep behavior and serves as an excellent model in which to study the neuronal and molecular mechanisms of sleep.

关键词： In A Longer Siesta?DN1s in Control DN

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Perspectives on the role of Pannexin 1 in neural precursor cell biology

引用

Neural Regeneration Research 2016年第10期11卷 1540-1544页

作者： Juan C.Sanchez-Arias leigh E.Wicki-Stordeur leigh Anne Swayne Division of Medical Sciences University of Victoria Island Medical Program and Department of Cellular and Physiological Sciences University of British Columbia

We recently reported that targeted deletion of Pannexin 1 in neural precursor cells of the ventricular zone impairs the maintenance of these cells in healthy and stroke-injured brain. Here we frame this exciting new finding in the context of our previous studies on Pannexin 1 in neural precursors as well as the close rela- tionship between Pannexin 1 and purinergic receptors established by other groups. Moreover, we identify important gaps in our understanding of Pannexin 1 in neural precursor cell biology in terms of the under- lying molecular mechanisms and functional/behavioural outcomes.

关键词： neural precursor ventricular zone pannexin ATP cytoskeleton proliferation phagoptosis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reproductive biology of an old endemic murid rodent of Australia, the Spinifex hopping mouse, Notomys alexis:adaptations for life in the arid zone

引用

Integrative Zoology 2011年第4期6卷 321-333页

作者： William G.BREED Chris M.leigh Discipline of Anatomy and Pathology University of AdelaideAdelaideAustralia

The Spinifex hopping mouse(Notomys alexis Thomas,1922)is an arid adapted Australo–Papuan old endemic rodent that undergoes boom and bust population *** this communication,we review our findings on the timing of reproduction and the potential reproductive rate of this *** investigate the first question,the reproductive condition of adult females,and occurrence of immatures,in a population on a cattle station in central Australia was determined and,for the second,data from a laboratory colony compared to those previously published on closely related species in other *** findings show that,at least in the population at the times that monitoring was performed,reproductive activity was only taking place in spring and early summer,whereas the laboratory study indicates that females have a similar gestation length and litter size to those of most close relatives occurring in other *** have extremely small testes and store relatively few *** findings suggest that Notomys alexis might show some seasonality of reproduction at least in this region of central Australia and that this species does not have a higher reproductive rate than that of related species in other,more predictable,environments.

关键词： arid environment hopping mouse reproduction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cue hierarchy in the foraging behaviour of the brackish cladoceran Daphniopsis australis

引用

Journal of Oceanology and Limnology 2018年第6期36卷 2050-2060页

作者： MCCLOUD Clayton leigh ISMAIL Hasnun Nita SEURONT Laurent Australian Fisheries Management Authority CanberraAustralia School of Biology Universiti Teknologi MARASelangorMalaysia CNRS Univ.LilleUniv.Littoral Coe d'OpaleUMR 8187LOGLaboratoire d'Océnologie et de GésciencesF 62930 WimereuxFrance

Zooplankton communities are an essential component of marine and freshwater food webs. However, there is still a relative lack of information on how these organisms behaviourally respond to a range of abiotic and biotic stressors. Specifically, the behaviour of the cladoceran D aphniopsis australis, a species endemic to South-eastern Australian saline lakes and ponds, is still unknown despite its potential role in the structure and function of inland water ecosystems. The swimming behaviour of males, parthenogenetic females and epiphial females was investigated under various conditions and combinations of food and conspecific cues. In the absence of cues, males displayed the most extensive swimming behaviour, exploring all areas of the container, and swimming in a series of relatively straight trajectories. In contrast, females typically exhibited a hop-and-sink motion characterised by the alternation between short bursts of swimming and sinking phases. Both females spent long periods near the bottom of the container, but epiphial females appeared to be more active than parthenogenetic ones that rarely made an excursion in the water column. In the presence of cues, males and females showed abilities to detect infochemicals from food and conspecifics, but exhibited specific behavioural strategies. Males essentially increased their swimming speed in the presence of food and/or conspecific infochemicals, and this increase was independent on the source of the cues, i.e. food, conspecific or a mixture of food and conspecifics. In contrast, females exhibited cue hierarchies that were related to their sexual status. Parthenogenetic females swam faster in the presence of food and a mixture of food and conspecific infochemicals than in the presence of cue from the opposite sex, which did not significantly differ from control observations conducted in the absence of cues. Epiphial females decreased their swimming speed in the presence of cues, with the most significant behavi

关键词： zooplankton chemical cues sex-specific behaviour

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design of advanced aerogel structures for oxygen reduction reaction electrocatalysis

引用

SusMat 2023年第1期3卷 44-57页

作者： leigh Peles-Strahl Yeela Persky Lior Elbaz Department of Chemistry Bar-Ilan UniversityRamat-GanIsrael Soreq NRC YavneIsrael

Oxygen reduction reaction(ORR)is considered the bottleneck reaction in fuel *** sluggish kinetics requires the use of scarce and expensive platinum group metal(PGM)*** efforts have been invested in trying to find a PGM-free catalyst to replace Pt for this reaction or reduce its *** interesting family of materials that has shown great promise in doing so is aerogels,which are based on covalent *** aerogels’high surface area and porosity enable good mass transport and high catalyst utilization that is expected to lower PGM loadings or replacing them *** review summarizes recent research in this field,introducing methods of using aerogels as cathodes for ORR,from carbon to metal *** catalytic sites vary from nanoparticles to atomically dispersed metal ions embedded in carbon aerogels that form all-in-one platform which can serve as both the support and the catalyst.

关键词： aerogels catalyst supports electrocatalysis fuel cells oxygen reduction reaction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Erythropoietin enhanced recovery after peripheral nerve injury

引用

Neural Regeneration Research 2017年第8期12卷 1268-1269页

作者： Max Modrak leigh Sundem John Elfar University of Rochester School of Medicine and Dentistry RochesterNY USA Department of Orthopaedic Surgery and Rehabilitation University of Rochester Medical Center Rochester NY USA Department of Orthopedic Surgery and Center for OrthopedicResearch and Translational Science Pennsylvania State University College of Medicine Hershey PA USA

Peripheral nerve injuries are common disorders affecting the US population and represent a great economic and social *** injuries to peripheral nerves are most often due to an acute trauma or iatrogenic injury,with th... 详细信息

关键词： EPO Erythropoietin enhanced recovery after peripheral nerve injury

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The role of Ca,Al and Zn on room temperature ductility and grain boundary cohesion of magnesium

引用

Journal of Magnesium and Alloys 2021年第5期9卷 1536-1551页

作者： Supriya Nandy Shao-Pu Tsai leigh Stephenson Dierk Raabe Stefan Zaefferer Max-Planck Institut für Eisenforschung Düsseldorf 40237Germany

It is know from literature that small additions(<1 wt%)of Ca,Al and Zn significantly improve the intrinsic ductility of *** exact role of each element,both qualitatively and quantitatively,and their combined effects,however,are poorly *** we achieved a much clearer view on the quantitative role of each element with respect to ductility improvement and on the collaborative effect,particularly of Ca and Zn in *** of our findings and conclusions are in disagreement with data and interpretation found in *** different alloys,namely,Mg-0.1 Ca,Mg-0.1 Ca-1 Al,Mg-0.05 Ca-1 Al,Mg-0.1 Ca-2 Al-1 Zn(all are in wt%)were selected for this *** alloys were treated such that *** grain sizes and textures were *** largely excludes the effect of extrinsic factors on ***-guided slip trace analyses reveal that the addition of Ca eases activation of prismatic and pyramidal II slip *** in-situ deformation experiments in SEM and atom probe tomography observations of grain boundaries direct evidence is given for the individual and synergetic effects of Ca and Zn on grain boundary cohesion as an important contribution to improve the ductility of these *** conclude that Ca reduces the slip anisotropy and ameliorates ductility,however,the weak grain boundary cohesion in the Mg-0.1 wt%Ca alloy limits the material’s tensile *** addition of Zn alters the Ca segregation at the grain boundaries and helps to retain their cohesive strength,an effect which thus enables higher ductility and *** further addition of Al primarily improves the *** results show that the balanced influence of reduced slip anisotropy on the one hand and increased grain boundary cohesion on the other hand allow to design a high strength high ductility rare-earth free Mg alloy.

关键词： Magnesium–Calcium–Zinc alloys Ductility Slip system determination grain boundary cohesion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

False codling moth Thaumatotibia leucotreta （Lepidoptera, Tortricidae） larvae are chill-susceptible

引用

Insect Science 2012年第3期19卷 315-328页

作者： leigh Boardman Tim G. Grout John S. Terblanche Department of Conservation Ecology and Entomology Faculty of Agrisciences Stellenbosch University Stellenbosch South Africa Citrus Research International Nelspruit South Africa

This study reports on the low temperature tolerance and cold hardiness of larvae of false codling moth, Thaumatotibia leucotreta. We found that larvae have mean critical thermal minima （lower limits of activity） of 6.7℃ which was influenced by feeding status. The effects of low temperature exposure and duration of exposure on larval survival were assessed and showed that the temperature at which 50% of the population survives is -11.5 ± 0.3℃ after 2 h exposure. The supercooling point （SCP, i.e., freezing temperature） was investigated using a range of cooling rates and under different conditions （feeding and hydration status） and using inoculative freezing treatments （in contact with water or orange juice）. The SCP decreased significantly from -15.6℃ to -17.4℃ after larvae were fasted for 24 h. Twenty-four hour treatments at either high or low relative humidity （95.9% or 2.4%） also significantly decreased SCP to -17.2℃ and -18.2℃ respectively. Inoculative freezing （by water contact） raised SCP from -15.6℃ to -6.8℃ which could have important implications for post-harvest sterilization. Cooling rates did not affect SCP which suggests that there is limited phenotypic plasticity of SCP during the larval life-stage, at least over the short time-scales investigated here. In conclusion, larvae of T. leucotreta are chill-susceptible and die upon freezing. These results are important in understanding this pest＇s response to temperature variation, understanding pest risk status and improving post-harvest sterilization efficacy

关键词： behavior chill injury cold hardiness disinfestations extracellular freezing,lethal limits life-stage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：